Re: GetOpt Organization

My default - less or more:

use Getopt::Long;
use Pod::Usage; # IMHO a must

Getopt::Long::Configure("no_ignore_case"); # double your options ;-)

GetOptions(\%options, "help", "foo=s","bar=s",); # or what ever

pod2usage( -exitstatus => 0, -verbose => 2 ) if $options{help}; 

foreach my $option (%options )    {
   pod2usage( -exitstatus => 2, -verbose => 1 ) unless $option;
}

__END__

# POD section here
[download]

Something like this is also very handy (should be self explaining):

GetOptions(
    \%options, "help", "suffix:s", "amount=i", "dir=s", "logpath=s", "
+From=s", "Subject:s", "Data:s", "Host:s",
    "patterns=s{1,}" => \@patterns,
    "To=s{1,}"       => \@recipients
);

# stuff
__END__

 ./foo.pl -a 2 \
           -d /path/to/dir \
           -l /path/to/logs \
           -F user@domain 
           -s suffix \
           -p foo bar \
           -T user@domain other@domain
[download]

Hint: If you declare "foo", you can call it as -f as well as --foo.

Regards, Karl

ŤThe Crux of the Biscuit is the Apostropheť

Comment on Re: GetOpt Organization Select or Download Code

Replies are listed 'Best First'.
Re^2: GetOpt Organization (error check) by Discipulus (Canon) on Mar 10, 2015 at 09:46 UTC
tsk, tsk.. no monk checks for the return status of GetOptions ?? You want your program running with invalid option passed? Here is my usual pattern: `use Getopt::Long; use Pod::Usage; unless ( GetOptions ( "color=s"=>\$par_color, "help" => \$par_help, ) ) {pod2usage(-verbose => 1,-exitval => 'NOEXIT'); &wait_for_in +put; exit;} if (defined $par_help){pod2usage(-verbose => 1,-exitval => 'NOEXIT'); +&wait_for_input; exit;}` [download] The function `pod2usage` supports `-exitval => 'NOEXIT'` (ie normally it exits the program unless you specify it to not do) useful if you started the program without a console, like in a Tk application as Tk Tartaglia's triangle fun - Pascal's triangle fun. HtH L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]
Re^3: GetOpt Organization (error check) by Anonymous Monk on Mar 10, 2015 at 11:29 UTC
tsk, tsk.. no monk checks for the return status of GetOptions ?? You want your program running with invalid option passed? The validation options and return value of GetOptions , and esp their combination, isn't that useful You still have to do your own validation, so let GetOptions warn, then write your program	[reply]
Re^4: GetOpt Organization (error check) by Discipulus (Canon) on Mar 10, 2015 at 11:42 UTC
Yes you are absolutely right. There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l]
Re^3: GetOpt Organization (error check) by karlgoethebier (Abbot) on Mar 10, 2015 at 10:29 UTC
...You want your program running with invalid option passed? No, perish the thought. When i run the snippet i posted with an invalid option i get: `monks>options.pl --goo Unknown option: goo` [download] Best regards, Karl ŤThe Crux of the Biscuit is the Apostropheť	[reply] [d/l]
Re^4: GetOpt Organization (error check) by Discipulus (Canon) on Mar 10, 2015 at 11:10 UTC
Well, i have to dissent my friend, try to add `print "Here i'm still alive!\n";` at the bottom of your snippet: i get `Unknown option: goo Here i'm still alive!` [download] L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]
Re^5: GetOpt Organization (error check) by karlgoethebier (Abbot) on Mar 10, 2015 at 11:20 UTC
Re^6: GetOpt Organization (error check) by Discipulus (Canon) on Mar 10, 2015 at 11:39 UTC


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	PerlMonks